./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6fc432013ed2168eea9a323e37470d64fe5b972a8b4d9d4e2e5fdd67cd32ffed --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:10:11,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:10:11,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:10:11,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:10:11,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:10:11,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:10:11,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:10:11,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:10:11,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:10:11,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:10:11,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:10:11,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:10:11,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:10:11,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:10:11,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:10:11,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:10:11,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:10:11,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:10:11,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:10:11,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:10:11,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:10:11,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:10:11,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:10:11,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:10:11,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:10:11,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:10:11,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:10:11,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:10:11,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:10:11,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:10:11,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:10:11,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:10:11,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:10:11,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:10:11,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:10:11,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:10:11,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:10:11,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:10:11,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:10:11,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:10:11,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:10:11,958 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:10:11,987 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:10:11,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:10:11,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:10:11,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:10:11,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:10:11,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:10:11,989 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:10:11,989 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:10:11,990 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:10:11,990 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:10:11,990 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:10:11,990 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:10:11,991 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:10:11,991 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:10:11,991 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:10:11,991 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:10:11,992 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:10:11,992 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:10:11,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:10:11,993 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:10:11,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:10:11,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:10:11,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:10:11,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:10:11,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:10:11,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:10:11,995 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:10:11,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:10:11,995 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:10:11,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:10:11,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:10:11,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:10:11,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:10:11,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:10:11,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:10:11,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:10:11,997 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:10:11,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:10:11,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:10:11,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:10:11,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:10:11,998 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fc432013ed2168eea9a323e37470d64fe5b972a8b4d9d4e2e5fdd67cd32ffed [2021-11-23 02:10:12,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:10:12,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:10:12,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:10:12,269 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:10:12,269 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:10:12,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec9_product28.cil.c [2021-11-23 02:10:12,376 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/data/4643d3943/0d93f45f2ab64e589a3a3830ef48cd8e/FLAG5676cb078 [2021-11-23 02:10:13,147 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:10:13,149 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/sv-benchmarks/c/product-lines/email_spec9_product28.cil.c [2021-11-23 02:10:13,177 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/data/4643d3943/0d93f45f2ab64e589a3a3830ef48cd8e/FLAG5676cb078 [2021-11-23 02:10:13,298 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/data/4643d3943/0d93f45f2ab64e589a3a3830ef48cd8e [2021-11-23 02:10:13,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:10:13,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:10:13,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:10:13,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:10:13,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:10:13,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:10:13" (1/1) ... [2021-11-23 02:10:13,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a217a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:13, skipping insertion in model container [2021-11-23 02:10:13,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:10:13" (1/1) ... [2021-11-23 02:10:13,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:10:13,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:10:14,183 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/sv-benchmarks/c/product-lines/email_spec9_product28.cil.c[63802,63815] [2021-11-23 02:10:14,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:10:14,199 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:10:14,349 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/sv-benchmarks/c/product-lines/email_spec9_product28.cil.c[63802,63815] [2021-11-23 02:10:14,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:10:14,394 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:10:14,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:14 WrapperNode [2021-11-23 02:10:14,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:10:14,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:10:14,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:10:14,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:10:14,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:14" (1/1) ... [2021-11-23 02:10:14,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:14" (1/1) ... [2021-11-23 02:10:14,553 INFO L137 Inliner]: procedures = 129, calls = 213, calls flagged for inlining = 56, calls inlined = 46, statements flattened = 868 [2021-11-23 02:10:14,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:10:14,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:10:14,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:10:14,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:10:14,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:14" (1/1) ... [2021-11-23 02:10:14,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:14" (1/1) ... [2021-11-23 02:10:14,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:14" (1/1) ... [2021-11-23 02:10:14,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:14" (1/1) ... [2021-11-23 02:10:14,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:14" (1/1) ... [2021-11-23 02:10:14,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:14" (1/1) ... [2021-11-23 02:10:14,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:14" (1/1) ... [2021-11-23 02:10:14,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:10:14,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:10:14,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:10:14,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:10:14,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:14" (1/1) ... [2021-11-23 02:10:14,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:10:14,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:10:14,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:10:14,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:10:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 02:10:14,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 02:10:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:10:14,811 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:10:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:10:14,811 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:10:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:10:14,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:10:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:10:14,812 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:10:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:10:14,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:10:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:10:14,813 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:10:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:10:14,814 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:10:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:10:14,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:10:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:10:14,814 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:10:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:10:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:10:14,815 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:10:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:10:14,816 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:10:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:10:14,817 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:10:14,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:10:14,817 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 02:10:14,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 02:10:14,818 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:10:14,818 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:10:14,818 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:10:14,818 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:10:14,819 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:10:14,819 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:10:14,819 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 02:10:14,820 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 02:10:14,820 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:10:14,820 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:10:14,820 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:10:14,821 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:10:14,821 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:10:14,821 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:10:14,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:10:14,822 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:10:14,823 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:10:14,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:10:14,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:10:15,094 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:10:15,097 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:10:16,054 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:10:16,469 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:10:16,469 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:10:16,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:16 BoogieIcfgContainer [2021-11-23 02:10:16,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:10:16,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:10:16,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:10:16,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:10:16,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:10:13" (1/3) ... [2021-11-23 02:10:16,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2466b747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:10:16, skipping insertion in model container [2021-11-23 02:10:16,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:14" (2/3) ... [2021-11-23 02:10:16,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2466b747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:10:16, skipping insertion in model container [2021-11-23 02:10:16,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:16" (3/3) ... [2021-11-23 02:10:16,483 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product28.cil.c [2021-11-23 02:10:16,490 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:10:16,490 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:10:16,575 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:10:16,583 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:10:16,584 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:10:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-23 02:10:16,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 02:10:16,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:16,620 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:16,620 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:10:16,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:16,627 INFO L85 PathProgramCache]: Analyzing trace with hash -237789091, now seen corresponding path program 1 times [2021-11-23 02:10:16,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:16,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490114655] [2021-11-23 02:10:16,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:16,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:10:17,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:17,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490114655] [2021-11-23 02:10:17,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490114655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:17,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:17,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:10:17,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085996795] [2021-11-23 02:10:17,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:17,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:10:17,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:17,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:10:17,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:10:17,219 INFO L87 Difference]: Start difference. First operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:10:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:17,428 INFO L93 Difference]: Finished difference Result 277 states and 362 transitions. [2021-11-23 02:10:17,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:10:17,431 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2021-11-23 02:10:17,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:17,451 INFO L225 Difference]: With dead ends: 277 [2021-11-23 02:10:17,452 INFO L226 Difference]: Without dead ends: 177 [2021-11-23 02:10:17,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:10:17,466 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:17,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:10:17,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-23 02:10:17,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-23 02:10:17,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 107 states have internal predecessors, (136), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-23 02:10:17,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 235 transitions. [2021-11-23 02:10:17,589 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 235 transitions. Word has length 61 [2021-11-23 02:10:17,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:17,591 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 235 transitions. [2021-11-23 02:10:17,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:10:17,594 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 235 transitions. [2021-11-23 02:10:17,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 02:10:17,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:17,607 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:17,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:10:17,608 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:10:17,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:17,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2041869761, now seen corresponding path program 1 times [2021-11-23 02:10:17,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:17,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125633036] [2021-11-23 02:10:17,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:17,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:17,876 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:10:17,877 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:17,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125633036] [2021-11-23 02:10:17,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125633036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:17,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:17,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:10:17,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410104467] [2021-11-23 02:10:17,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:17,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:10:17,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:17,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:10:17,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:10:17,888 INFO L87 Difference]: Start difference. First operand 177 states and 235 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:10:18,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:18,073 INFO L93 Difference]: Finished difference Result 273 states and 350 transitions. [2021-11-23 02:10:18,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:10:18,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 62 [2021-11-23 02:10:18,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:18,084 INFO L225 Difference]: With dead ends: 273 [2021-11-23 02:10:18,085 INFO L226 Difference]: Without dead ends: 179 [2021-11-23 02:10:18,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:10:18,097 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 0 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:18,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 409 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:10:18,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-23 02:10:18,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-11-23 02:10:18,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 109 states have internal predecessors, (138), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-23 02:10:18,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2021-11-23 02:10:18,153 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 62 [2021-11-23 02:10:18,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:18,155 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2021-11-23 02:10:18,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:10:18,156 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2021-11-23 02:10:18,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 02:10:18,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:18,164 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:18,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:10:18,165 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:10:18,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:18,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1503020543, now seen corresponding path program 1 times [2021-11-23 02:10:18,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:18,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843363155] [2021-11-23 02:10:18,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:18,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:18,284 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:10:18,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:18,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843363155] [2021-11-23 02:10:18,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843363155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:18,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:18,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:10:18,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886649025] [2021-11-23 02:10:18,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:18,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:10:18,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:18,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:10:18,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:10:18,289 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:10:18,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:18,492 INFO L93 Difference]: Finished difference Result 388 states and 533 transitions. [2021-11-23 02:10:18,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:10:18,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2021-11-23 02:10:18,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:18,501 INFO L225 Difference]: With dead ends: 388 [2021-11-23 02:10:18,501 INFO L226 Difference]: Without dead ends: 227 [2021-11-23 02:10:18,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:10:18,514 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 57 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:18,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 420 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:10:18,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-23 02:10:18,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 222. [2021-11-23 02:10:18,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 138 states have (on average 1.3840579710144927) internal successors, (191), 141 states have internal predecessors, (191), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-11-23 02:10:18,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 312 transitions. [2021-11-23 02:10:18,551 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 312 transitions. Word has length 67 [2021-11-23 02:10:18,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:18,551 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 312 transitions. [2021-11-23 02:10:18,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:10:18,552 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 312 transitions. [2021-11-23 02:10:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:10:18,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:18,554 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:18,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:10:18,555 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:10:18,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:18,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1949167652, now seen corresponding path program 1 times [2021-11-23 02:10:18,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:18,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973284565] [2021-11-23 02:10:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:18,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:10:18,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:18,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973284565] [2021-11-23 02:10:18,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973284565] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:10:18,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279439058] [2021-11-23 02:10:18,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:18,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:10:18,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:10:18,736 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:10:18,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:10:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:19,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:10:19,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:19,351 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:10:19,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:10:19,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279439058] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:10:19,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [346855476] [2021-11-23 02:10:19,599 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2021-11-23 02:10:19,600 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:10:19,607 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:10:19,614 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:10:19,615 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:10:47,857 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:10:48,155 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2021-11-23 02:10:48,415 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:11:01,113 WARN L227 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:11:06,775 WARN L227 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:11:13,478 WARN L227 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:11:19,913 WARN L227 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 472 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:11:26,332 WARN L227 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 474 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:09,902 WARN L227 SmtUtils]: Spent 20.77s on a formula simplification. DAG size of input: 589 DAG size of output: 456 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:19,637 WARN L227 SmtUtils]: Spent 9.10s on a formula simplification. DAG size of input: 574 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:29,300 WARN L227 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 576 DAG size of output: 401 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:39,570 WARN L227 SmtUtils]: Spent 9.62s on a formula simplification. DAG size of input: 576 DAG size of output: 374 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:49,878 WARN L227 SmtUtils]: Spent 9.60s on a formula simplification. DAG size of input: 574 DAG size of output: 372 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:55,866 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 572 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:55,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [346855476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:55,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:12:55,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4, 4, 4] total 27 [2021-11-23 02:12:55,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111313464] [2021-11-23 02:12:55,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:55,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 02:12:55,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:55,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 02:12:55,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2021-11-23 02:12:55,873 INFO L87 Difference]: Start difference. First operand 222 states and 312 transitions. Second operand has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-23 02:13:04,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:04,108 INFO L93 Difference]: Finished difference Result 523 states and 785 transitions. [2021-11-23 02:13:04,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 02:13:04,109 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 68 [2021-11-23 02:13:04,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:04,113 INFO L225 Difference]: With dead ends: 523 [2021-11-23 02:13:04,114 INFO L226 Difference]: Without dead ends: 319 [2021-11-23 02:13:04,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 127.5s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2021-11-23 02:13:04,116 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 142 mSDsluCounter, 2882 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:04,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 3069 Invalid, 1807 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-11-23 02:13:04,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-11-23 02:13:04,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 245. [2021-11-23 02:13:04,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 160 states have (on average 1.4) internal successors, (224), 163 states have internal predecessors, (224), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-11-23 02:13:04,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 345 transitions. [2021-11-23 02:13:04,225 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 345 transitions. Word has length 68 [2021-11-23 02:13:04,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:04,225 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 345 transitions. [2021-11-23 02:13:04,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-23 02:13:04,226 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 345 transitions. [2021-11-23 02:13:04,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 02:13:04,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:04,229 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:04,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:13:04,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:13:04,440 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:04,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:04,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1203771102, now seen corresponding path program 1 times [2021-11-23 02:13:04,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:04,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194715546] [2021-11-23 02:13:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:04,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:13:04,512 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:04,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194715546] [2021-11-23 02:13:04,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194715546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:04,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:13:04,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:13:04,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534758679] [2021-11-23 02:13:04,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:04,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:13:04,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:04,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:13:04,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:04,515 INFO L87 Difference]: Start difference. First operand 245 states and 345 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:13:04,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:04,708 INFO L93 Difference]: Finished difference Result 583 states and 854 transitions. [2021-11-23 02:13:04,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:13:04,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 73 [2021-11-23 02:13:04,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:04,713 INFO L225 Difference]: With dead ends: 583 [2021-11-23 02:13:04,713 INFO L226 Difference]: Without dead ends: 362 [2021-11-23 02:13:04,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:04,715 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 55 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:04,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 430 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:13:04,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-11-23 02:13:04,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2021-11-23 02:13:04,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 247 states have (on average 1.45748987854251) internal successors, (360), 250 states have internal predecessors, (360), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2021-11-23 02:13:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 531 transitions. [2021-11-23 02:13:04,835 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 531 transitions. Word has length 73 [2021-11-23 02:13:04,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:04,836 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 531 transitions. [2021-11-23 02:13:04,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:13:04,836 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 531 transitions. [2021-11-23 02:13:04,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 02:13:04,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:04,840 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:04,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:13:04,840 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:04,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:04,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1780686664, now seen corresponding path program 1 times [2021-11-23 02:13:04,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:04,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340477948] [2021-11-23 02:13:04,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:04,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:04,918 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:13:04,919 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:04,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340477948] [2021-11-23 02:13:04,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340477948] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:13:04,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75178391] [2021-11-23 02:13:04,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:04,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:13:04,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:13:04,927 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:13:04,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:13:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:05,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:13:05,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:13:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:13:05,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:13:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:13:05,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75178391] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:13:05,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [424313473] [2021-11-23 02:13:05,533 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2021-11-23 02:13:05,533 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:13:05,534 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:13:05,534 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:13:05,534 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:13:36,310 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:13:36,563 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2021-11-23 02:13:36,812 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:13:53,367 WARN L227 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:14:09,044 WARN L227 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 474 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:14:45,587 WARN L227 SmtUtils]: Spent 18.53s on a formula simplification. DAG size of input: 593 DAG size of output: 462 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:14:52,578 WARN L227 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 574 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:15:02,546 WARN L227 SmtUtils]: Spent 9.49s on a formula simplification. DAG size of input: 576 DAG size of output: 377 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:15:09,723 WARN L227 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 576 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:15:16,990 WARN L227 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 574 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:15:27,786 WARN L227 SmtUtils]: Spent 10.07s on a formula simplification. DAG size of input: 574 DAG size of output: 374 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:15:38,298 WARN L227 SmtUtils]: Spent 10.00s on a formula simplification. DAG size of input: 572 DAG size of output: 372 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:15:45,201 WARN L227 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 568 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:15:48,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [424313473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:15:48,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:15:48,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 4, 4] total 31 [2021-11-23 02:15:48,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146259633] [2021-11-23 02:15:48,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:15:48,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 02:15:48,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:15:48,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 02:15:48,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2021-11-23 02:15:48,097 INFO L87 Difference]: Start difference. First operand 357 states and 531 transitions. Second operand has 26 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2021-11-23 02:16:09,914 WARN L227 SmtUtils]: Spent 20.17s on a formula simplification. DAG size of input: 570 DAG size of output: 452 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:16:30,887 WARN L227 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 414 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:16:36,499 WARN L227 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 412 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:16:50,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:50,825 INFO L93 Difference]: Finished difference Result 808 states and 1262 transitions. [2021-11-23 02:16:50,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 02:16:50,825 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 74 [2021-11-23 02:16:50,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:50,831 INFO L225 Difference]: With dead ends: 808 [2021-11-23 02:16:50,831 INFO L226 Difference]: Without dead ends: 514 [2021-11-23 02:16:50,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 183.4s TimeCoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2021-11-23 02:16:50,835 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 351 mSDsluCounter, 3263 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:50,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 3410 Invalid, 2336 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2021-11-23 02:16:50,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-11-23 02:16:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 419. [2021-11-23 02:16:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 305 states have (on average 1.5049180327868852) internal successors, (459), 310 states have internal predecessors, (459), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2021-11-23 02:16:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 636 transitions. [2021-11-23 02:16:51,055 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 636 transitions. Word has length 74 [2021-11-23 02:16:51,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:51,056 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 636 transitions. [2021-11-23 02:16:51,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2021-11-23 02:16:51,057 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 636 transitions. [2021-11-23 02:16:51,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 02:16:51,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:51,060 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:51,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:51,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 02:16:51,275 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:51,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:51,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1925302324, now seen corresponding path program 1 times [2021-11-23 02:16:51,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:51,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450887506] [2021-11-23 02:16:51,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:51,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:51,419 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:16:51,420 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:51,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450887506] [2021-11-23 02:16:51,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450887506] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:51,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533362384] [2021-11-23 02:16:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:51,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:51,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:51,422 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:51,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87183adc-2ec2-4fbc-b770-843120bc57a4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:16:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:51,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:16:51,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:16:51,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:16:52,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533362384] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:52,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [830244007] [2021-11-23 02:16:52,192 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2021-11-23 02:16:52,192 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:52,193 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:52,194 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:52,194 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:18:31,511 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:18:31,824 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2021-11-23 02:18:32,141 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2021-11-23 02:18:32,458 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 426 for LOIs [2021-11-23 02:18:40,505 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 213 for LOIs [2021-11-23 02:18:40,573 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2021-11-23 02:18:40,895 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 421 for LOIs [2021-11-23 02:18:59,338 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 390 for LOIs [2021-11-23 02:18:59,615 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 378 for LOIs [2021-11-23 02:18:59,736 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 227 for LOIs [2021-11-23 02:18:59,789 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 402 for LOIs [2021-11-23 02:19:00,300 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:19:14,376 WARN L227 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:21,229 WARN L227 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:28,577 WARN L227 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:35,613 WARN L227 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 472 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:42,656 WARN L227 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 474 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:20:09,098 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 539 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:20:25,654 WARN L227 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 515 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:20:40,256 WARN L227 SmtUtils]: Spent 10.81s on a formula simplification. DAG size of input: 536 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:20:46,644 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 529 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:02,816 WARN L227 SmtUtils]: Spent 9.51s on a formula simplification. DAG size of input: 531 DAG size of output: 316 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:18,280 WARN L227 SmtUtils]: Spent 7.68s on a formula simplification. DAG size of input: 534 DAG size of output: 379 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)